CN116345002A - Container formula liquid cooling energy storage integrated system based on multistage fire control is disposed - Google Patents
Container formula liquid cooling energy storage integrated system based on multistage fire control is disposed Download PDFInfo
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- CN116345002A CN116345002A CN202310407292.XA CN202310407292A CN116345002A CN 116345002 A CN116345002 A CN 116345002A CN 202310407292 A CN202310407292 A CN 202310407292A CN 116345002 A CN116345002 A CN 116345002A
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- 238000001816 cooling Methods 0.000 title claims abstract description 186
- 238000004146 energy storage Methods 0.000 title claims abstract description 53
- 239000000443 aerosol Substances 0.000 claims abstract description 16
- 239000007921 spray Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 238000001514 detection method Methods 0.000 claims description 14
- 238000005507 spraying Methods 0.000 claims description 14
- 239000000779 smoke Substances 0.000 claims description 13
- 230000000007 visual effect Effects 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 8
- 238000012423 maintenance Methods 0.000 claims description 7
- 230000001502 supplementing effect Effects 0.000 claims description 7
- QQZOPKMRPOGIEB-UHFFFAOYSA-N 2-Oxohexane Chemical class CCCCC(C)=O QQZOPKMRPOGIEB-UHFFFAOYSA-N 0.000 claims description 6
- 230000033228 biological regulation Effects 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 238000012986 modification Methods 0.000 claims description 4
- 230000004048 modification Effects 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 108010066114 cabin-2 Proteins 0.000 claims description 3
- 239000000110 cooling liquid Substances 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000003814 drug Substances 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 3
- 206010000369 Accident Diseases 0.000 abstract description 8
- 230000006872 improvement Effects 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000001629 suppression Effects 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 3
- 238000012983 electrochemical energy storage Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- WVSNNWIIMPNRDB-UHFFFAOYSA-N 1,1,1,3,3,4,4,5,5,6,6,6-dodecafluorohexan-2-one Chemical compound FC(F)(F)C(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F WVSNNWIIMPNRDB-UHFFFAOYSA-N 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- UKACHOXRXFQJFN-UHFFFAOYSA-N heptafluoropropane Chemical compound FC(F)C(F)(F)C(F)(F)F UKACHOXRXFQJFN-UHFFFAOYSA-N 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/627—Stationary installations, e.g. power plant buffering or backup power supplies
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Automation & Control Theory (AREA)
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Abstract
The invention provides a container type liquid cooling energy storage integrated system based on multistage fire control deployment, which relates to the technical field of battery energy storage and comprises the following components: a container and an internal battery subsystem, a battery management subsystem, a thermal management subsystem and a fire control subsystem; the battery subsystem is provided with a plurality of battery clusters, each battery cluster comprises a plurality of liquid cooling battery packs, and the liquid cooling battery packs are internally provided with hot aerosol, temperature acquisition equipment and voltage acquisition equipment; the method comprises the steps of collecting the temperature of a liquid cooling battery pack, starting hot aerosol to spray and extinguish fire when the temperature reaches a preset temperature threshold, outputting a dry contact to a battery management subsystem, positioning the liquid cooling battery pack, and starting an automatic fire extinguishing flow of a fire extinguishing subsystem; and the slave control and the master control of the battery management subsystem on each liquid cooling battery pack and each high-voltage box collect the temperature, voltage, current and switching value of the liquid cooling battery pack, upload the master control, judge the master control and carry out hierarchical alarm on the thermal management subsystem and/or the fire control subsystem. The invention can accurately fire and reduce the fire accident range of the energy storage equipment.
Description
Technical Field
The invention relates to the technical field of battery energy storage, in particular to a container type liquid cooling energy storage integrated system based on multistage fire protection deployment.
Background
Under the background of the vast development of clean energy in China, the construction scale and speed of renewable energy sources such as photovoltaic energy, wind energy and the like are accelerated. The energy storage technology creates commercial value by active cross-period and cross-season power balance capacity, solves the passive regulation burden of the power grid, and is a key for supporting stable and large-scale development of renewable energy sources.
Renewable energy sources such as wind energy and photovoltaic are matched with an energy storage system in a certain proportion, so that the energy sources are convenient to use reasonably and conveniently. Meanwhile, the energy storage has the characteristics of safety, high cost performance, no regional limitation, high charge and discharge cycle efficiency, adjustability and expandability and the like, and meets the conditions, especially the electrochemical energy storage with expandability only represented by lithium ion batteries at present.
At present, the lithium ion energy storage battery system is already applied to various fields such as a new energy power generation side, a power grid side, a business user side, electric auxiliary service, an optical storage station and the like in a large area, a large-scale electrochemical energy storage unit is mainly designed by taking a container prefabricated cabin as a main part, the density of a battery cabin unit is continuously improved to meet energy storage requirements, the heat generated by a battery is correspondingly increased, the heat accumulation is easily caused in the charging and discharging process of the battery according to electrochemical energy storage characteristics, and under extreme conditions, the temperature of the battery is rapidly increased to generate thermal runaway, so that the fire accident of the battery is caused.
In the existing container type energy storage system, a perfluoro-hexanone or heptafluoropropane gas fire extinguishing mode is adopted for fire fighting, and after gas is detected by a gas detector, full-bin gas is immersed for spraying; the fire-fighting mode is mainly based on post-intervention, can not realize pre-warning, can not achieve accurate positioning of a thermal runaway position, and can not reduce the range of fire accidents.
Disclosure of Invention
Aiming at the problems, the invention provides a container type liquid cooling energy storage integrated system based on multistage fire protection deployment, which performs heat management through a liquid cooling unit and multistage liquid cooling management, dissipates heat for a battery unit by utilizing liquid circulation, and intelligently regulates and controls the liquid cooling system according to the temperature of a single battery and the temperature of a battery compartment so as to ensure that the energy storage unit operates at the optimal temperature; meanwhile, through a multi-stage fire control system, the battery thermal runaway condition is accurately fire-controlled, and the range of fire accidents is reduced.
In order to achieve the above purpose, the invention provides a container type liquid cooling energy storage integrated system based on multistage fire protection deployment, which comprises: the container is provided with a battery subsystem, a battery management subsystem, a confluence control cabinet, a heat management subsystem and a fire control subsystem which are arranged in the container;
the battery subsystem is provided with a plurality of battery frames, each battery frame is respectively provided with a high-voltage box and a plurality of liquid cooling battery PACKs, each liquid cooling battery PACKs comprises a box body, and a plurality of battery modules, hot aerosol, temperature acquisition equipment, voltage acquisition equipment, a communication interface, a battery positive-negative interface, a fire-fighting gas pipeline interface, a liquid cooling system water inlet and a liquid cooling system water outlet which are arranged in the box body; the temperature acquisition equipment acquires the temperature of the liquid cooling battery PACK, if the temperature reaches a preset temperature threshold, the hot aerosol is started to spray and extinguish fire, a pair of dry connection points are output to the battery management subsystem, and the battery management subsystem accurately positions the liquid cooling battery PACK and starts an automatic fire extinguishing process of the fire extinguishing subsystem;
the slave control and the master control of the battery management subsystem are respectively arranged on each liquid cooling battery PACK and each high-voltage box, the master control and the display control of the battery management subsystem are arranged in the confluence control cabinet, the slave control and the master control collect the temperature, the voltage, the current and the switching value of the liquid cooling battery PACK and upload the master control, and the master control judges the data and carries out hierarchical alarm on the thermal management subsystem and/or the fire control subsystem; the thermal management subsystem receives the alarm signal to control the start and stop of the liquid cooling system, so as to realize the regulation of the temperature of the battery system; the fire-fighting subsystem receives the alarm signal, cuts off PCS charging and discharging and the high-voltage box relay, and starts the automatic fire-extinguishing flow.
As a further improvement of the invention, the container is divided into a battery compartment, an electric fire-fighting equipment compartment and a liquid cooling compartment;
the battery compartment is separated from the battery fire-fighting equipment compartment and the liquid cooling compartment through fireproof plates.
As a further improvement of the invention, the battery management subsystem also comprises a display control, the display control is arranged in the reflux control cabinet, the data obtained by the general control are displayed on a display screen, and the operations of starting and stopping and modifying the threshold value can be performed through the man-machine interface of the display screen.
As a further improvement of the invention, the confluence control cabinet comprises a direct current breaker and an emergency stop button;
the direct current breaker is connected with the energy storage converter device, the cables of each high-voltage box in the battery subsystem are converged into a converging system, and reach the energy storage converter device through the direct current breaker,
when the liquid cooling energy storage integrated system fails, the external power supply is cut off through the direct current breaker or the external power supply is cut off through the emergency stop button.
As a further improvement of the present invention, the confluence control cabinet further includes: the system comprises an operation indicator lamp, a main control, a display control, a high-voltage box power supply and a UPS;
the operation indicator lamp displays the equipment operation state of the liquid cooling energy storage integrated system, the high-voltage box power supply supplies alternating current power for the high-voltage box and the liquid cooling battery PACK, and the UPS supplies power for general control, display control and security equipment.
As a further improvement of the present invention, the thermal management subsystem comprises: the device comprises a variable frequency liquid cooling unit, a liquid cooling pipeline, a controller, a temperature detector and an industrial air conditioner;
the variable-frequency liquid cooling unit and the temperature detector are arranged in the liquid cooling cabin, and the controller controls the start and stop of the liquid cooling system according to the temperature of the temperature detector and the temperature of the battery cell of the liquid cooling battery PACK;
the industrial air conditioner is arranged on one side of the container, adjusts the temperature and humidity in the cabin, and provides an alarm passive signal to the general control.
As a further improvement of the invention, the controller is communicated with the master control of the battery management subsystem, and when the liquid cooling system fails, an alarm passive signal is sent to the master control, the equipment is stopped, and the battery management subsystem alarms.
As a further improvement of the invention, the liquid cooling system comprises a liquid cooling pipeline, and the liquid cooling management comprises a primary liquid cooling pipeline, a secondary liquid cooling pipeline corresponding to each battery rack and a tertiary liquid cooling pipeline corresponding to each battery PACK;
ball valves are arranged at the interfaces of each secondary liquid cooling pipeline and the primary liquid cooling pipeline and at the interfaces of each tertiary liquid cooling pipeline and the secondary liquid cooling pipeline, and an anti-leakage quick-connection plug is arranged at the interface of each tertiary liquid cooling pipeline and the liquid cooling battery PACK;
when the liquid cooling energy storage integrated system has a liquid cooling battery PACK fault, a ball valve at the interface of the three-stage liquid cooling pipeline and the two-stage liquid cooling pipeline of the battery rack can be closed, the fault liquid cooling battery PACK is extracted and replaced after water is emptied, and then the ball valve is opened for liquid supplementing;
when the secondary liquid cooling pipeline has faults, the ball valve at the interface of the secondary pipeline and the primary liquid cooling pipeline is closed, the cooling liquid in the secondary liquid cooling pipeline is discharged for maintenance, and the ball valve is opened for liquid supplementing after the maintenance is completed.
As a further improvement of the present invention, comprising: the fire-fighting subsystem comprises a detection alarm module, a fire extinguishing agent conveying and spraying module and a communication transmission module;
the fire extinguishing agent conveyer spouts the module and includes fire extinguishing agent storage container, fire control pipeline and the electromagnetic drive device that connects gradually, the fire control pipeline passes through electromagnetic drive device communicates respectively with each liquid cooling battery PACK, electromagnetic drive device sends each liquid cooling battery PACK with the fire extinguishing agent in the fire extinguishing agent storage container.
As a further improvement of the present invention, the detection alarm module includes: the system comprises a detector, a fire control controller and an audible and visual alarm, wherein the whole cabin of the container is provided with an independent alarm and detection area, and each liquid cooling battery PACK is provided with an independent alarm and detection area;
the battery compartment is provided with two point-type smoke detectors, two temperature detectors and two combustible gas detectors; a gas fire extinguishing controller and a flammable gas alarm are arranged in the electric fire-fighting equipment cabin;
when the point-type smoke detector, the temperature detector and the combustible gas detector of the battery compartment give an alarm, the fire-fighting controller controls the gas fire-fighting controller to be linked with the battery management subsystem, the battery management subsystem cuts off the direct-current circuit breaker and the high-voltage box relay of the confluence control cabinet, and the gas fire-fighting controller completes fire-fighting automatic control based on the fire-fighting subsystem.
As a further improvement of the present invention, the gas fire extinguishing controller performs fire extinguishing automatic control based on the fire extinguishing subsystem, including:
presetting automatic control conditions, including primary alarm and secondary alarm, primary alarm includes: the point type temperature sensing detector or the point type smoke sensing detector in the cabin alarms; the secondary alarm comprises: a. acquiring a temperature signal or an aerosol starting signal of the liquid cooling battery PACK, and transmitting fire alarm information of the liquid cooling battery PACK to an interface card of a fire alarm system in a protocol mode after the battery management subsystem is analyzed and judged; b. the point type temperature sensing detector and the point type smoke sensing detector in the cabin alarm at the same time; c. the point-type temperature sensing detector and the flammable gas detector in the cabin alarm at the same time; d. the cabin 2 only can be used for the combustible gas detector and the second threshold value alarm;
presetting a control scheme, and starting an audible and visual alarm in the cabin when a primary alarm condition is reached; when the secondary alarm condition a is reached, starting an out-cabin audible and visual alarm, closing a fan, cutting off a direct current breaker of a confluence control cabinet and non-fire electricity, starting a perfluorinated hexanone container valve, starting a cluster electromagnetic selection valve of a battery rack where an N number PACK is positioned, repeatedly spraying for a plurality of times according to a spraying strategy within 30 minutes in spraying time, and turning on a deflation indicator lamp after the pressure switch action of a bottle group; when the secondary alarm conditions b, c and d are reached, an off-cabin audible and visual alarm is started, the countdown is started for less than or equal to 30 seconds, a fan, a PCS and non-fire electricity are closed, a perfluorinated hexanone container valve and a cabin electromagnetic selection valve are started to spray medicament after the countdown is finished, and a deflation indicator lamp is lightened after a bottle group pressure switch acts.
As a further improvement of the invention, a video and access subsystem is also arranged in the container.
Compared with the prior art, the invention has the beneficial effects that:
aiming at the problems that the unit energy density of the existing container type energy storage system is high, heat accumulation is easy to cause in the process of charging and discharging a battery, and battery fire accidents are easy to occur due to thermal runaway under extreme conditions, and the existing fire control technology cannot accurately position and cannot realize early warning in advance, the invention provides a container type liquid cooling energy storage system based on multistage fire control deployment; this container formula liquid cooling energy storage system, heat management mode adopts liquid cooling unit and multistage liquid cooling pipeline, utilizes liquid circulation to dispel the heat for the battery cell, communicates with battery management subsystem simultaneously, carries out intelligent regulation and control to liquid cooling system according to battery cell temperature and battery compartment temperature, guarantees that the energy storage unit operates at the optimum temperature, simultaneously, to battery thermal runaway problem, provides multistage fire extinguishing system, realizes accurate fire control, reduces battery fire accident scope.
Drawings
FIG. 1 is a schematic diagram of a container-type liquid-cooled energy storage integrated system based on multi-stage fire deployment according to one embodiment of the present invention;
fig. 2 is a schematic diagram of a liquid cooling pipeline of a container type liquid cooling energy storage integrated system based on multistage fire deployment according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a fire suppression agent conveyor discharge configuration in a fire suppression subsystem according to one embodiment of the present invention;
FIG. 4 is a schematic diagram of a detection alarm module according to an embodiment of the present invention;
fig. 5 is a logic diagram of fire suppression control of a fire suppression controller according to an embodiment of the present invention.
Reference numerals illustrate:
1. a smoke-sensing and temperature-sensing detector; 2. a combustible gas detector; 3. an explosion-proof fan; 4. an explosion-proof lamp; 5. a water immersion sensor; 6. a temperature and humidity sensor; 7. an air-extinguishing device; 8. an access control device; 9. a pressure release valve; 10. air-conditioning; 11. a battery cluster; 12. a liquid cooling unit; 13. a confluence control cabinet; 14. a primary liquid cooling pipeline; 15. a secondary liquid cooling pipeline; 16. a three-stage liquid cooling pipeline; 17. an electromagnetic valve; 18. a high pressure metal hose; 19. an electromagnetic selection valve; 20. a high pressure nozzle; 21. a steel cylinder; 22. a ventilation control box; 23. and starting and stopping the fan shutter.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention is described in further detail below with reference to the attached drawing figures:
as shown in fig. 1, the container type liquid cooling energy storage integrated system based on multi-stage fire protection deployment provided by the invention comprises: the container and the battery subsystem, the battery management subsystem, the convergence control cabinet 13, the heat management subsystem and the fire control subsystem which are arranged in the container;
the container is divided into a battery compartment, an electric fire-fighting equipment compartment and a liquid cooling compartment, the battery fire-fighting equipment compartment and the liquid cooling compartment are all separated by a fireproof plate, when a fire disaster occurs in the battery, the fireproof plate can effectively prevent the fire disaster from spreading, equipment in the electric fire-fighting equipment compartment is protected, a power supply is timely cut off, and an alarm signal is sent out.
The battery subsystem is provided with a plurality of battery frames, each battery frame is respectively provided with a high-voltage box and a plurality of liquid cooling battery PACKs, each liquid cooling battery PACKs comprises a box body, a plurality of battery modules, hot aerosol, temperature acquisition equipment, voltage acquisition equipment, a communication interface, a battery positive-negative interface, a fire-fighting gas pipeline interface, a liquid cooling system water inlet and a liquid cooling system water outlet, wherein the battery modules, the hot aerosol, the temperature acquisition equipment, the voltage acquisition equipment, the communication interface, the battery positive-negative interface, the fire-fighting gas pipeline interface, the liquid cooling system water inlet and the liquid cooling system water outlet are arranged in the box body; the temperature acquisition equipment acquires the temperature of the liquid cooling battery PACK, if the temperature reaches a preset temperature threshold, the hot aerosol is started to spray and extinguish fire, a pair of dry contacts are output to the battery management subsystem, and the battery management subsystem accurately positions the liquid cooling battery PACK and starts an automatic fire extinguishing flow of the fire extinguishing subsystem;
the slave control and the master control of the battery management subsystem are respectively arranged on each liquid cooling battery PACK and each high-voltage box, the master control and the display control of the battery management subsystem are arranged in the current collecting control cabinet 13, the slave control and the master control collect the temperature, voltage, current and switching value of the liquid cooling battery PACK and upload the master control, and the master control judges data and carries out hierarchical alarm on the heat management subsystem and/or the fire control subsystem; the thermal management subsystem receives the alarm signal to control the start and stop of the liquid cooling system, so as to realize the regulation of the temperature of the battery system; the fire-fighting subsystem receives the alarm signal, cuts off the PCS charging and discharging and the high-voltage box relay, and starts the automatic fire-extinguishing flow.
Wherein,,
the battery subsystem is provided with 9 battery frames, 9 high-voltage boxes and a plurality of liquid cooling battery PACKs, the battery frames are welded in a channel steel mode, each battery frame is provided with 8 liquid cooling battery PACKs and 1 high-voltage box, and the 8 liquid cooling battery PACKs form a battery cluster 11; the high-voltage box is a control unit of the battery cluster 11 and comprises a circuit breaker, a main positive contactor, a main negative contactor, a fuse, a main control module, a switching power supply and the like.
The liquid cooling battery PACK (namely liquid cooling PACK) comprises a PACK box body, wherein 4 battery modules, hot aerosol, voltage acquisition equipment, temperature acquisition equipment and a slave control module are arranged in the box body, and a positive and negative battery interface, a communication interface, a water inlet and a water outlet of a liquid cooling system, a fire-fighting gas pipeline interface and a pressure relief valve 9 are arranged on a front panel.
The hot aerosol is a PACK-level fire-fighting device, the preset temperature threshold is 170 ℃, when the PACK temperature of the liquid cooling battery reaches 170 ℃, the hot aerosol is started to spray and extinguish fire, a pair of dry contacts are output to the battery management subsystem, and after the fire-fighting subsystem is started to accurately position the PACK of the liquid cooling battery, the automatic fire-extinguishing flow is started.
The battery management subsystem further comprises a display control, the display control is arranged in the reflux control cabinet, data acquired by the general control are displayed on a display screen, and start-stop and threshold value modification operations can be performed through a man-machine interface of the display screen.
The master control is communicated with the fire control subsystem and the thermal management subsystem through 485 communication, provides a pre-fire alarm signal and a fire alarm dry contact point, can timely send out an equipment stop signal when a fire disaster occurs, cuts off PCS charge and discharge, and cuts off the relay of the high-voltage box of each battery cluster 11;
the converging control cabinet 13 comprises a direct current breaker, an emergency stop button, an operation indicator lamp, a main control, a display control, a high-voltage box power supply and a UPS; the direct current circuit breaker is connected with the energy storage converter device, and the cables of each high-voltage box in the battery subsystem are collected into a confluence and reach the energy storage converter device through the direct current circuit breaker; when the liquid cooling energy storage integrated system fails, the external power supply is cut off through the direct current breaker or is cut off through the emergency stop button. The operation indicator light displays the equipment operation state of the liquid cooling energy storage integrated system, the high-voltage box power supply supplies alternating current power for the high-voltage box and the liquid cooling battery PACK, and the UPS supplies power for the general control, display control and security equipment, so that the main equipment can be ensured to normally operate when power is cut. Further, the power supply of the high-voltage box is 20V alternating current power supply, and the UPS is 24V power supply.
The system also comprises a low-voltage power distribution subsystem for providing 380V and 220V power for the electric equipment in the container.
The thermal management subsystem is a liquid cooling design, comprising: a variable frequency liquid cooling unit, a liquid cooling pipeline, a controller, a temperature detector and an industrial air conditioner 10; the variable-frequency liquid cooling unit and the temperature detector are arranged in the liquid cooling cabin, and the variable-frequency liquid cooling unit comprises a variable-frequency compressor, a water supply pump, a liquid supplementing pump, a condenser and the like; the controller controls the start and stop of the liquid cooling system according to the temperature of the temperature detector and the temperature of the battery core of the liquid cooling battery PACK; the controller can also communicate with the master control of the battery management subsystem through 485 communication and provide an alarm passive signal to the master control, when the liquid cooling unit fails, the equipment is stopped, and the battery management subsystem alarms; the industrial air conditioner 10 is arranged on one side of the container, adjusts the temperature and humidity in the cabin, and provides an alarm passive signal to the general control;
as shown in fig. 2, the liquid cooling system comprises liquid cooling pipelines, wherein the liquid cooling pipelines comprise a primary liquid cooling pipeline 14, a secondary liquid cooling pipeline 15 corresponding to each battery rack and a tertiary liquid cooling pipeline 16 corresponding to each battery PACK; ball valves are arranged at the interface of each secondary liquid cooling pipeline 15 and the primary liquid cooling pipeline 14 and at the interface of each tertiary liquid cooling pipeline 16 and the secondary liquid cooling pipeline 15, and an anti-leakage quick-connection plug is arranged at the interface of each tertiary liquid cooling pipeline 16 and the liquid cooling battery PACK; when the liquid cooling energy storage integrated system has a liquid cooling battery PACK fault, a ball valve at the interface of the three-stage liquid cooling pipeline 16 and the two-stage liquid cooling pipeline 15 of the battery rack can be closed, the fault liquid cooling battery PACK is extracted and replaced after the water is emptied, and then the ball valve is opened for liquid supplementing; when the secondary liquid cooling pipeline 15 has faults, a ball valve at the joint of the secondary pipeline and the primary liquid cooling pipeline 14 is closed, cooling liquid in the secondary liquid cooling pipeline 15 is discharged for maintenance, and after maintenance is completed, the ball valve is opened for liquid supplementing.
The fire-fighting subsystem comprises a detection alarm module, a fire-extinguishing agent conveying and spraying module (shown in figure 3) and a communication transmission module, and the systems have a communication function and a linkage control function; the fire extinguishing agent conveyer spouts the module and includes fire extinguishing agent storage container, fire control pipeline and the electromagnetic drive device that connects gradually, and the fire control pipeline passes through electromagnetic drive device and each liquid cooling battery PACK intercommunication respectively, makes single liquid cooling battery PACK be 1 independent protection area, and electromagnetic drive device sends each liquid cooling battery PACK with the fire extinguishing agent in the fire extinguishing agent storage container. Further, the fire extinguishing agent storage container adopts a steel bottle 21, an electromagnetic valve 17 is arranged at the top of the steel bottle 21, the output end of the steel bottle 21 adopts a high-pressure metal hose 18 and is connected with a conveying pipeline, the diameter of a main pipeline and two large branches of the conveying pipeline are 25mm, the diameter of a small branch is 15mm, an electromagnetic selection valve 19 is arranged on the large branch, and each battery PACK corresponds to one high-pressure spray head 20.
As shown in fig. 4, the detection alarm module includes: the detector comprises a temperature-sensing smoke detector, a combustible gas detector 2, a water immersion detector and a temperature and humidity sensor 6, setting the whole container as an independent alarm and detection area, and setting each liquid cooling battery PACK as an independent alarm and detection area; the battery compartment is provided with two point-type smoke detectors, two temperature detectors and two combustible gas detectors 2; a gas fire extinguishing controller (a gas extinguishing device 7) and a flammable gas alarm (a flammable gas detector 2) are arranged in the electric fire equipment cabin; further, when the point-type smoke detector, the temperature detector and the combustible gas detector 2 of the battery compartment give an alarm, the fire-fighting controller controls the gas fire-extinguishing controller to be linked with the battery management subsystem, the battery management subsystem cuts off the direct-current circuit breaker and the high-voltage box relay of the confluence control cabinet 13, and the gas fire-extinguishing controller completes fire-extinguishing automatic control based on the fire-extinguishing subsystem.
The main chip of the battery management subsystem adopts JBF5014, the detector of the fire-fighting subsystem, the electromagnetic selector valve 19 of the liquid cooling system, the shutter 23 of the start-stop fan and the ventilation control box 22 are all powered by the power supply in a centralized way, the detector outputs a main fire alarm signal according to the detected signal and uploads the main chip of the battery management subsystem, the main chip outputs a pre-fire alarm signal and a fault signal, and meanwhile, the main chip controls the steel cylinder 21 of the fire extinguishing agent conveying and spraying module and the high-pressure spray head 20 to spray fire.
Still further, the gas fire extinguishing controller performs fire extinguishing automatic control based on the fire extinguishing subsystem, comprising:
presetting automatic control conditions including primary alarm and secondary alarm,
the primary alarm comprises the following steps: the point type temperature sensing detector or the point type smoke sensing detector in the cabin alarms;
the secondary alarm comprises:
a. acquiring a temperature signal or an aerosol starting signal of the liquid cooling battery PACK, and transmitting fire alarm information of the liquid cooling battery PACK to an interface card of a fire alarm system in a protocol mode after the battery management subsystem analyzes and judges the temperature signal or the aerosol starting signal;
b. the point type temperature sensing detector and the point type smoke sensing detector in the cabin alarm at the same time;
c. the point-type temperature sensing detector and the flammable gas detector 2 in the cabin alarm at the same time;
d. the cabin 2 only can burn the gas detector 2 and the second threshold value is alarmed at the same time;
presetting a control scheme:
when the primary alarm condition is reached, starting an audible and visual alarm in the cabin;
when the secondary alarm condition a is reached, starting an out-cabin audible and visual alarm, closing a fan, cutting off a direct current breaker of a confluence control cabinet 13 and using non-fire electricity, starting a perfluorinated hexanone container valve, starting a cluster-level electromagnetic selection valve 19 of a battery rack where an N-th PACK is positioned, repeatedly spraying for a plurality of times according to a spraying strategy within 30 minutes in spraying time, and turning on a deflation indicator lamp after the pressure switch action of a bottle group;
when the secondary alarm conditions b, c and d are reached, an off-cabin audible and visual alarm is started, the countdown is started for less than or equal to 30 seconds, a fan, a PCS and non-fire electricity are closed, a perfluorinated hexanone container valve and a cabin electromagnetic selection valve 19 are started to spray medicament after the countdown is finished, and a deflation indicator lamp is lightened after a bottle group pressure switch acts.
Manual control of the gas fire suppression controller:
when personnel enter the battery compartment for maintenance, the system is switched to a manual starting state, and the system is not started automatically. When an emergency starting button outside the cabin is pressed, cabin-level injection when the secondary alarm conditions b, c and d are reached is entered.
In the delay phase of PACK or cabin-level start, the discharge of the stop system can be performed by pressing an emergency stop button outside the cabin.
The control logic is shown in fig. 5, the flammable gas alarm is communicated with the flammable gas detection device, when the flammable gas reaches a first threshold value, the fire alarm controller starts the audible and visual alarm after receiving the signal, starts the fan to exhaust air and exchange air, sends information to the battery management subsystem, and cuts off the PCS circuit breaker and the auxiliary power supply by the battery management subsystem.
The container also comprises a video and an access control subsystem, such as the access control device 8 in fig. 1 can monitor the liquid cooling energy storage integrated system through the video and the access control signal, the access control subsystem can output a pair of passive signals to the battery management subsystem, and when a person opens the door, the battery management subsystem transmits an alarm signal to the background for monitoring, and the background monitoring system processes the alarm signal.
The outer side of the container is provided with a plurality of explosion-proof fans 3 which play a role in radiating heat of the container; a plurality of explosion-proof lamps 4 are arranged in the container to play a role in lighting the container; an air conditioner 10 is arranged in the container to cool the interior of the container; the top and the bottom of the inner side of the container are respectively provided with a water logging sensor 5 for detecting whether the container leaks or not, and once the container leaks, an alarm is immediately sent out to prevent related loss and hazard caused by water leakage accidents.
The invention has the advantages that:
aiming at the problems that the unit energy density of the existing container type energy storage system is high, heat accumulation is easy to cause in the process of charging and discharging a battery, and battery fire accidents are easy to occur due to thermal runaway under extreme conditions, and the existing fire control technology cannot accurately position and cannot realize early warning in advance, the invention provides a container type liquid cooling energy storage system based on multistage fire control deployment; this container formula liquid cooling energy storage system, heat management mode adopts liquid cooling unit and multistage liquid cooling pipeline, utilizes liquid circulation to dispel the heat for the battery cell, communicates with battery management subsystem simultaneously, carries out intelligent regulation and control to liquid cooling system according to battery cell temperature and battery compartment temperature, guarantees that the energy storage unit operates at the optimum temperature, simultaneously, to battery thermal runaway problem, provides multistage fire extinguishing system, realizes accurate fire control, reduces battery fire accident scope.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. Container formula liquid cooling energy storage integrated system based on multistage fire control deployment, characterized in that includes: the container is provided with a battery subsystem, a battery management subsystem, a confluence control cabinet, a heat management subsystem and a fire control subsystem which are arranged in the container;
the battery subsystem is provided with a plurality of battery frames, each battery frame is respectively provided with a high-voltage box and a plurality of liquid cooling battery PACKs, each liquid cooling battery PACKs comprises a box body, and a plurality of battery modules, hot aerosol, temperature acquisition equipment, voltage acquisition equipment, a communication interface, a battery positive-negative interface, a fire-fighting gas pipeline interface, a liquid cooling system water inlet and a liquid cooling system water outlet which are arranged in the box body; the temperature acquisition equipment acquires the temperature of the liquid cooling battery PACK, if the temperature reaches a preset temperature threshold, the hot aerosol is started to spray and extinguish fire, a pair of dry connection points are output to the battery management subsystem, and the battery management subsystem accurately positions the liquid cooling battery PACK and starts an automatic fire extinguishing process of the fire extinguishing subsystem;
the slave control and the master control of the battery management subsystem are respectively arranged on each liquid cooling battery PACK and each high-voltage box, the master control and the display control of the battery management subsystem are arranged in the confluence control cabinet, the slave control and the master control collect the temperature, the voltage, the current and the switching value of the liquid cooling battery PACK and upload the master control, and the master control judges the data and carries out hierarchical alarm on the thermal management subsystem and/or the fire control subsystem; the thermal management subsystem receives the alarm signal to control the start and stop of the liquid cooling system, so as to realize the regulation of the temperature of the battery system; the fire-fighting subsystem receives the alarm signal, cuts off PCS charging and discharging and the high-voltage box relay, and starts the automatic fire-extinguishing flow.
2. The multi-stage fire deployment-based container-type liquid-cooled energy storage integrated system of claim 1, wherein: the container is divided into a battery compartment, an electric fire-fighting equipment compartment and a liquid cooling compartment;
the battery compartment is separated from the battery fire-fighting equipment compartment and the liquid cooling compartment through fireproof plates.
3. The multi-stage fire deployment-based container-type liquid-cooled energy storage integrated system of claim 1, wherein: the battery management subsystem further comprises a display control, the display control is arranged in the reflux control cabinet, data acquired by the general control are displayed on a display screen, and start-stop and threshold modification operations can be performed through a human-computer interface of the display screen.
4. The multi-stage fire deployment-based container-type liquid-cooled energy storage integrated system of claim 1, wherein: the confluence control cabinet comprises a direct current breaker and an emergency stop button;
the direct current breaker is connected with the energy storage converter device, the cables of each high-voltage box in the battery subsystem are converged into a converging system, and reach the energy storage converter device through the direct current breaker,
when the liquid cooling energy storage integrated system fails, the external power supply is cut off through the direct current breaker or the external power supply is cut off through the emergency stop button.
5. The multi-stage fire deployment-based container-type liquid-cooled energy storage integrated system of claim 4, wherein: the conflux control cabinet still includes: the system comprises an operation indicator lamp, a main control, a display control, a high-voltage box power supply and a UPS;
the operation indicator lamp displays the equipment operation state of the liquid cooling energy storage integrated system, the high-voltage box power supply supplies alternating current power for the high-voltage box and the liquid cooling battery PACK, and the UPS supplies power for general control, display control and security equipment.
6. The multi-stage fire deployment-based container-type liquid-cooled energy storage integrated system of claim 2, wherein: the thermal management subsystem includes: the device comprises a variable frequency liquid cooling unit, a liquid cooling pipeline, a controller, a temperature detector and an industrial air conditioner;
the variable-frequency liquid cooling unit and the temperature detector are arranged in the liquid cooling cabin, and the controller controls the start and stop of the liquid cooling system according to the temperature of the temperature detector and the temperature of the battery cell of the liquid cooling battery PACK;
the industrial air conditioner is arranged on one side of the container, adjusts the temperature and humidity in the cabin, and provides an alarm passive signal to the master control;
the controller communicates with the master control of the battery management subsystem, and when the liquid cooling system fails, an alarm passive signal is sent to the master control, the equipment is stopped, and the battery management subsystem alarms.
7. The multi-stage fire deployment-based container-type liquid-cooled energy storage integrated system of claim 1, wherein: the liquid cooling system comprises a liquid cooling pipeline, wherein the liquid cooling pipeline comprises a primary liquid cooling pipeline, a secondary liquid cooling pipeline corresponding to each battery rack and a tertiary liquid cooling pipeline corresponding to each battery PACK;
ball valves are arranged at the interfaces of each secondary liquid cooling pipeline and the primary liquid cooling pipeline and at the interfaces of each tertiary liquid cooling pipeline and the secondary liquid cooling pipeline, and an anti-leakage quick-connection plug is arranged at the interface of each tertiary liquid cooling pipeline and the liquid cooling battery PACK;
when the liquid cooling energy storage integrated system has a liquid cooling battery PACK fault, a ball valve at the interface of the three-stage liquid cooling pipeline and the two-stage liquid cooling pipeline of the battery rack can be closed, the fault liquid cooling battery PACK is extracted and replaced after water is emptied, and then the ball valve is opened for liquid supplementing;
when the secondary liquid cooling pipeline has faults, the ball valve at the interface of the secondary pipeline and the primary liquid cooling pipeline is closed, the cooling liquid in the secondary liquid cooling pipeline is discharged for maintenance, and the ball valve is opened for liquid supplementing after the maintenance is completed.
8. The multi-stage fire deployment-based container-type liquid-cooled energy storage integrated system of claim 6, wherein: comprising the following steps: the fire-fighting subsystem comprises a detection alarm module, a fire extinguishing agent conveying and spraying module and a communication transmission module;
the fire extinguishing agent conveyer spouts the module and includes fire extinguishing agent storage container, fire control pipeline and the electromagnetic drive device that connects gradually, the fire control pipeline passes through electromagnetic drive device communicates respectively with each liquid cooling battery PACK, electromagnetic drive device sends each liquid cooling battery PACK with the fire extinguishing agent in the fire extinguishing agent storage container.
9. The multi-stage fire deployment-based container-type liquid-cooled energy storage integrated system of claim 8, wherein: the detection alarm module comprises: the system comprises a detector, a fire control controller and an audible and visual alarm, wherein the whole cabin of the container is provided with an independent alarm and detection area, and each liquid cooling battery PACK is provided with an independent alarm and detection area;
the battery compartment is provided with two point-type smoke detectors, two temperature detectors and two combustible gas detectors; a gas fire extinguishing controller and a flammable gas alarm are arranged in the electric fire-fighting equipment cabin;
when the point-type smoke detector, the temperature detector and the combustible gas detector of the battery compartment give an alarm, the fire-fighting controller controls the gas fire-fighting controller to be linked with the battery management subsystem, the battery management subsystem cuts off the direct-current circuit breaker and the high-voltage box relay of the confluence control cabinet, and the gas fire-fighting controller completes fire-fighting automatic control based on the fire-fighting subsystem.
10. The multi-stage fire deployment-based container-type liquid-cooled energy storage integrated system of claim 9, wherein: the gas fire extinguishing controller completes fire extinguishing automatic control based on the fire extinguishing subsystem, and comprises:
presetting automatic control conditions, including primary alarm and secondary alarm, primary alarm includes: the point type temperature sensing detector or the point type smoke sensing detector in the cabin alarms; the secondary alarm comprises: a. acquiring a temperature signal or an aerosol starting signal of the liquid cooling battery PACK, and transmitting fire alarm information of the liquid cooling battery PACK to an interface card of a fire alarm system in a protocol mode after the battery management subsystem is analyzed and judged; b. the point type temperature sensing detector and the point type smoke sensing detector in the cabin alarm at the same time; c. the point-type temperature sensing detector and the flammable gas detector in the cabin alarm at the same time; d. the cabin 2 only can be used for the combustible gas detector and the second threshold value alarm;
presetting a control scheme, and starting an audible and visual alarm in the cabin when a primary alarm condition is reached; when the secondary alarm condition a is reached, starting an out-cabin audible and visual alarm, closing a fan, cutting off a direct current breaker of a confluence control cabinet and non-fire electricity, starting a perfluorinated hexanone container valve, starting a cluster electromagnetic selection valve of a battery rack where an N number PACK is positioned, repeatedly spraying for a plurality of times according to a spraying strategy within 30 minutes in spraying time, and turning on a deflation indicator lamp after the pressure switch action of a bottle group; when the secondary alarm conditions b, c and d are reached, an off-cabin audible and visual alarm is started, the countdown is started for less than or equal to 30 seconds, a fan, a PCS and non-fire electricity are closed, a perfluorinated hexanone container valve and a cabin electromagnetic selection valve are started to spray medicament after the countdown is finished, and a deflation indicator lamp is lightened after a bottle group pressure switch acts.
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